Senior Mobile Application Engineer (.NET MAUI / Xamarin)

Responsibilities

• Design, develop, and maintain high-quality applications using C# and the .NET ecosystem, ensuring clean, maintainable, and efficient code
• Design and implement scalable software architectures using established design patterns and architectural principles to ensure systems are modular, testable, and maintainable
• Develop applications using the Model-View-ViewModel (MVVM) pattern, ensuring strong separation of concerns and maintainable UI logic
• Apply industry best practices including SOLID principles, clean code standards, and reusable design patterns while actively participating in code reviews
• Analyze complex technical requirements and design solutions that balance performance, scalability, and maintainability
• Develop and integrate RESTful APIs and external services, ensuring secure and efficient data exchange
• Identify performance bottlenecks and implement improvements to optimize system responsiveness and resource utilization
• Collaborate with cross-functional teams including Product, QA, and DevOps, while mentoring junior developers and contributing to engineering best practices
• Contribute to architectural discussions and continuously improve system reliability, maintainability, and development standards
• What We Look For
• Bachelor's degree in Computer Science, Engineering, or a related field
• 5+ years of professional software development experience
• Proven expertise in C# and .NET frameworks
• Strong experience implementing MVVM architecture
• Deep understanding of software design patterns such as Factory, Singleton, Repository, and Dependency Injection
• Experience designing scalable system architectures and distributed applications
• Hands-on experience designing and consuming REST APIs
• Strong knowledge of object-oriented programming principles
• Experience working in Agile development environments
• Experience with .NET MAUI, Xamarin, or cross-platform development frameworks (preferred)
• Experience with performance profiling, debugging tools, and automated testing frameworks including unit, integration, or UI testing (preferred)
• Strong analytical and problem-solving capabilities
• Excellent collaboration and communication skills
• Ability to work independently and take ownership of complex features
• Interest in mentoring and guiding other engineers
• Based in or able to work from India (Remote / Hybrid)

Benefits

Additional Information

At Clario, part of Thermo Fisher Scientific, we are seeking a Senior Mobile Application Engineer (.NET MAUI / Xamarin) to help design, build, and evolve the Clario App-our core mobile platform used by patients and clinical research sites across global clinical trials. This platform plays a critical role in how patients engage with research, enabling reliable data collection, improving compliance, and supporting a high‑quality trial experience. In this role, you will develop robust, scalable mobile applications using C#, MVVM architecture, and modern cross‑platform frameworks such as .NET MAUI, building on Xamarin‑based foundations where applicable. You will take ownership of mobile solution design, contribute to architectural decisions, and continuously raise standards for code quality, performance, and maintainability. Working closely with product, UX, quality engineering, and clinical stakeholders, you will deliver patient‑facing applications used globally-where stability, usability, and data integrity are essential to advancing life‑changing clinical research.

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